I've owned one (T3 Hunter), and my father in law has a Krico 222 that was rebarreled recently with a 24" Hart 1:12 twist - both accurate of course. But what cartridge isn't accurate?
Ballisticly, the 222 is fine. 223 has been killing it for so long, and will continue to until the 222 slips into real obscurity. That could take 40 more years though. I got rid of my 221 Fireball and 222 years ago, in an effort to simplify my varmint rifle arsenal. Now I shoot a 16" 223 that is lucky to give speeds that my 22" barrel 221 Fireball did, but I like the practicality of the 223, especially in a 1:8 twist barrel that allows me to shoot anything out there.
1:14 twist 222 pretty narrow bullet selection. Good 300y varmint gun though, maybe a bit light for wolf